I was in that game too, and honestly with the amount of fed bruisers we had, just get a Thornmail and work on HP. Part of the problem with all bruiser enemy comps is, if your team is uncoordinated, you'll get bum-rushed, try to run, and then get run down (which is what happened).

Don't get me wrong, BC is pretty darn amazing. But people will learn how to play against it.